In USA soil taxonomy, Andisols are soils formed in volcanic ash and defined in terms of the dominance of glass and poorly crystalline colloidal materials such as allophane, imogolite, and ferrihydrite (andic properties). In the FAO soil classification, Andisols are known as Andosols. Soil taxonomy provided by United States Department of Agriculture / Natural Resources Conservation Centre provides an elaborate classification of soil types according to several parameters and in several levels: Order, Suborder, Great Group, Subgroup, Family, and Series. ... For the heavy metal band see Soil (band) Soil is the layer of minerals and organic matter, in thickness from centimetres to a metre or more, on the land surface. ... Diamond Head, a well-known backdrop to Waikiki in Hawaii, is an ash cone that solidified into tuff Volcanic ash is the term for very fine rock and mineral particles less than 2 mm in diameter that are ejected from a volcanic vent. ... The FAO developed a supra-national classification, also called World Soil Classification, which offers useful generalizations about soils pedogenesis in relation to the interactions with the main soil-forming factors. ...

Because they are generally quite young, Andisols typically are very fertile except in cases where phosphorus is easily fixed (this sometimes occurs in the tropics). They can usually support intensive cropping, with areas used for wet rice in Java supporting some of the densest populations in the world. Other Andisol areas support crops of fruit, maize, tea, coffee or tobacco. This article is about the chemical element. ... Species Oryza barthii Oryza glaberrima Oryza latifolia Oryza longistaminata Oryza punctata Oryza rufipogon Oryza sativa References ITIS 41975 2002-09-22 This article is about the food grain, not the university or Condoleezza Rice; see also rice (disambiguation). ... View of the Puncak area in West Java Java (Indonesian: Jawa) is the most populous of Indonesias islands, and the site of its capital city, Jakarta. ... Fruit stall in Barcelona, Spain. ... Species Zea diploperennis Zea luxurians Zea nicaraguensis Zea perennis References ITIS 42268 2002-09-22 Sorting Zea names This article is about the staple food. ... A tea bush. ... Coffee beans and a cup of coffee Coffee as a drink, usually served hot, is prepared from the roasted seeds (beans) of the coffee plant. ... Species N. glauca N. longiflora N. rustica N. sylvestris N. tabacum Ref: ITIS 30562 as of 2002-08-28 Tobacco () is a broad-leafed plant of the nightshade family, indigenous to North and South America, whose dried and cured leaves are often smoked (see tobacco smoking) in the form of...

Most Andisols occur around the Pacific Rim Of Fire, with the largest areas found in central Chile, Ecuador, Colombia, Mexico, the Pacific Northwest, Japan, Java and New Zealand's North Island. Other areas occur in the Great Rift Valley, Italy, Iceland and Hawaii. Darker red states are always part of the Pacific Northwest. ... View of the Puncak area in West Java Java (Indonesian: Jawa) is the most populous of Indonesias islands, and the site of its capital city, Jakarta. ... The North Island is one of the two main islands of New Zealand, the other being the South Island. ... Northern section of the Great Rift Valley. ... State nickname: The Aloha State Other U.S. States Capital Honolulu Largest city Honolulu Governor Linda Lingle Official languages Hawaiian and English Area 28,337 km² (43rd)  - Land 16,649 km²  - Water 11,672 km² (41. ...

Fossil Andisols are known from areas far from present-day volcanic activity and have in some cases been dated as far back as the Precambrian 1.5 billion years ago. FOSSIL is a standard for allowing serial communication for telecommunications programs under DOS. FOSSIL stands for Fido Opus Seadog Standard Interface Layer and was made by a group of Fidonet sysops to make their software work on different machines. ... The Precambrian or Cryptozoic is the period of the geologic timescale from the formation of Earth around 4500 million years before the present (BP) to the evolution of abundant macroscopic hard-shelled fossils, which marked the beginning of the Cambrian, some 542 million years BP. Remarkably little is known about...

Andisols are divided into the following suborders:

Aquands - Andisols with a water table at or near the surface for much of the year.

Cryands - Andisols of cold climates.

Torrands - Andisols of very dry climates.

Ustands - Andisols of semiarid and subhumid climates.

Udands - Andisols of humid climates.

Xerands - temperate Andisols with very dry summers and moist winters.

Vitrands - relatively young Andisols that are coarse-textured and dominated by glass

See also

Pedogenesis
Pedology (soil study)
Soil classification

Pedogenesis or soil evolution (formation) is the process by which soil is created. ... Pedology, (from the Greek pedon = soil), is the study of soils and soil formation. ... Soil classification is the branch of soil science which deals with the systematic categorization of soils based on distinguishing characteristics developed during soil formation as well as criteria that dictate choices in land use and soil management. ...